function $E(id) {
	return document.getElementById(id);
}

document.getByClassNameIE=function(tag,nameCn) {
	var arr=new Array();
	var cn = 0;
	var allspan = document.getElementsByTagName(tag);
	while (element = allspan[cn++]) {
		if (element.className==nameCn) {
			arr.push(element);
		}
	}
	return arr;
}